| 1 | /* classes: h_files */ |
| 2 | |
| 3 | #ifndef SCM_THROW_H |
| 4 | #define SCM_THROW_H |
| 5 | |
| 6 | /* Copyright (C) 1995,1996,1998,2000, 2006, 2008, 2010, 2014 Free Software Foundation, Inc. |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public License |
| 10 | * as published by the Free Software Foundation; either version 3 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with this library; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 21 | * 02110-1301 USA |
| 22 | */ |
| 23 | |
| 24 | \f |
| 25 | |
| 26 | #include "libguile/__scm.h" |
| 27 | |
| 28 | \f |
| 29 | |
| 30 | typedef SCM (*scm_t_catch_body) (void *data); |
| 31 | typedef SCM (*scm_t_catch_handler) (void *data, |
| 32 | SCM tag, SCM throw_args); |
| 33 | |
| 34 | SCM_API SCM scm_c_catch (SCM tag, |
| 35 | scm_t_catch_body body, |
| 36 | void *body_data, |
| 37 | scm_t_catch_handler handler, |
| 38 | void *handler_data, |
| 39 | scm_t_catch_handler pre_unwind_handler, |
| 40 | void *pre_unwind_handler_data); |
| 41 | |
| 42 | SCM_API SCM scm_c_with_throw_handler (SCM tag, |
| 43 | scm_t_catch_body body, |
| 44 | void *body_data, |
| 45 | scm_t_catch_handler handler, |
| 46 | void *handler_data, |
| 47 | int lazy_catch_p); |
| 48 | |
| 49 | SCM_API SCM scm_internal_catch (SCM tag, |
| 50 | scm_t_catch_body body, |
| 51 | void *body_data, |
| 52 | scm_t_catch_handler handler, |
| 53 | void *handler_data); |
| 54 | |
| 55 | /* The first argument to scm_body_thunk should be a pointer to one of |
| 56 | these. See the implementation of catch in throw.c. */ |
| 57 | struct scm_body_thunk_data |
| 58 | { |
| 59 | /* The tag being caught. We only use it to figure out what |
| 60 | arguments to pass to the body procedure; see scm_catch_thunk_body for |
| 61 | details. */ |
| 62 | SCM tag; |
| 63 | |
| 64 | /* The Scheme procedure object constituting the catch body. |
| 65 | scm_body_by_proc invokes this. */ |
| 66 | SCM body_proc; |
| 67 | }; |
| 68 | |
| 69 | SCM_API SCM scm_body_thunk (void *); |
| 70 | |
| 71 | |
| 72 | SCM_API SCM scm_handle_by_proc (void *, SCM, SCM); |
| 73 | SCM_API SCM scm_handle_by_proc_catching_all (void *, SCM, SCM); |
| 74 | SCM_API SCM scm_handle_by_message (void *, SCM, SCM); |
| 75 | SCM_API SCM scm_handle_by_message_noexit (void *, SCM, SCM); |
| 76 | SCM_API SCM scm_handle_by_throw (void *, SCM, SCM); |
| 77 | SCM_API int scm_exit_status (SCM args); |
| 78 | |
| 79 | SCM_API SCM scm_catch_with_pre_unwind_handler (SCM tag, SCM thunk, SCM handler, SCM lazy_handler); |
| 80 | SCM_API SCM scm_catch (SCM tag, SCM thunk, SCM handler); |
| 81 | SCM_API SCM scm_with_throw_handler (SCM tag, SCM thunk, SCM handler); |
| 82 | SCM_API SCM scm_ithrow (SCM key, SCM args, int no_return); |
| 83 | |
| 84 | /* This throws to the `stack-overflow' key, without running pre-unwind |
| 85 | handlers. */ |
| 86 | SCM_API void scm_report_stack_overflow (void); |
| 87 | |
| 88 | /* This throws to the `out-of-memory' key, without running pre-unwind |
| 89 | handlers. */ |
| 90 | SCM_API void scm_report_out_of_memory (void); |
| 91 | |
| 92 | SCM_API SCM scm_throw (SCM key, SCM args); |
| 93 | SCM_INTERNAL void scm_init_throw (void); |
| 94 | |
| 95 | #endif /* SCM_THROW_H */ |
| 96 | |
| 97 | /* |
| 98 | Local Variables: |
| 99 | c-file-style: "gnu" |
| 100 | End: |
| 101 | */ |